/midi-to-piano-roll

Converts MIDI files to DAW-like piano rolls for printing

Primary LanguageJavaScript

MIDI to Printable Piano Roll

Piano roll example

A tool that converts MIDI files into printable piano rolls. Primarily intended for people who prefer piano rolls found in DAWs over sheet music.

Just drop your local MIDI files, tweak some knobs and print.

Live app

https://bladeSk.github.io/midi-to-piano-roll

Issues

If you have a MIDI file that doesn't display correctly, feel free to create an issue and attach it. Notes not mapping to bars correctly are most likely an issue with the file itself and should be easily correctable by tweaking the MIDI tempo field.

Local usage

Clone this repo, run npm i or yarn and open index.html in your browser.

Usage as a Node.js library

npm i https://github.com/bladeSk/midi-to-piano-roll

const fs = require('fs')
const PianoRollSvg = require('midi-to-piano-roll')

let midi = fs.readFileSync('test.mid', { encoding: 'base64' })
let prSvg = new PianoRollSvg(midi)

// get all the available config options here: PianoRollSvg.getDefaultConfig()
let svg = prSvg.render({
	tracksToRender: { 0: true, 2: true, 3: true },
})

fs.writeFileSync('test.svg', svg)